A handheld nondestructive detection device for lycopene based on dual-wavelength Raman spectroscopy

Abstract

The invention provides a hand-held nondestructive lycopene detection apparatus based on dual-wavelength Raman spectrometry. The hand-held nondestructive lycopene detection apparatus comprises a Raman probe, a 488-nm laser, a 514-nm laser and a spectrometer, wherein the Raman probe is integrated with a 488-nm excitation optical fiber and a corresponding first excitation optical path thereof, a 514-nm excitation optical fiber and a corresponding second excitation optical path thereof, a 488-nm collection optical fiber and a corresponding first collection optical path thereof, and a 514-nm collection optical fiber and a corresponding second collection optical path thereof; the 488-nm excitation optical fiber is connected with the 488-nm laser; the 514-nm excitation optical fiber is connected with the 514-nm laser; and the 488-nm collection optical fiber and the 514-nm collection optical fiber are connected with the spectrometer. The hand-held nondestructive lycopene detection apparatus provided by the invention can effectively distinguish the contents of lycopene and beta-carotene, realize in-situ detection of a to-be-detected sample, eliminate system errors and greatly simplify the adjustment and detection process of a system; and the hand-held nondestructive lycopene detection apparatus is simple and compact in structure, easy to operate, convenient to carry with one and more suitable for field and on-site detection.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a hand-held nondestructive detection device for lycopene based on dual-wavelength Raman spectroscopy. Background technique [0002] Lycopene is one of the carotenoids and is one of the strongest antioxidants found so far. It can reduce the risk of cancer and cardiovascular diseases, and has the effects of delaying aging and regulating human immunity. Humans and animals cannot synthesize lycopene, they can only be ingested from food, and tomato fruit is one of the most important natural donors of lycopene. As the most important quality index of tomato fruit, lycopene is mostly detected by spectrophotometry (national standard method), liquid chromatography, colorimetry, molar extinction coefficient method and some improved methods. Tomato fruits need to be destructively pre-treated, and the operation of related equipment is relatively complicated, which is difficult to meet ...

AI Technical Summary

Problems solved by technology

However, in this method, the two wavelengths correspond to two completely independent systems, so in-situ measurement cannot be achieved, and systematic errors inevitably exist, requiring a complicated calibration process

Images